Dev Error DB

Error category

Cursor Errors and Fixes

Fix Cursor editor, chat, model access, authentication, provider configuration, and AI coding workflow errors without relying on client-side search.

This Cursor troubleshooting hub collects real error signatures, quick fixes, common causes, and step-by-step debugging paths for developers who need a practical answer instead of a broad overview.

18 articles in this category.

Troubleshooting overview

Start by matching the exact error message, then check the technology, environment, credentials, network path, and deployment context. The pages below are grouped so you can move from broad Cursor symptoms to specific root-cause families without relying on client-side search.

Common error types

  • authentication failed
  • model not available
  • usage limit reached
  • invalid request
  • stream connection failed
  • server info missing

Common causes

  • Claude Code (the desktop app) blocks users with 'Usage limit reached - resets at 6:00pm' even when they have sufficient extra usage allocated on their Business Premium account. This completely blocks the coding workflow — no input box, no chat capability. (1 page)
  • Business account with Premium tier. Sufficient extra usage allocated but sessions blocked with 'Usage limit reached - resets at 6:00pm'. Weekly usage of plan tokens blocks access despite available extra usage. Created 2026-05-12. (1 page)
  • Paid Claude Desktop users experience crashes when opening certain sessions in the Code tab, losing work and productivity (1 page)
  • GitHub Issue #58210 (open): Claude Desktop 1.6608.2 on macOS 26.4.1 — main webview renderer crashes during session warm phase before user input. App silently reloads to blank state. Reproducible on sessions with long context history. exitCode 5 / SIGTRAP (1 page)
  • GitHub issue #6398 in cline/cline reports 'Healthcheck timed out' error when loading Cline plugin in IntelliJ/JetBrains. While technically Cline not Cursor, both share IDE-integrated AI coding assistant category. Cursor-specific errors are common and high-value per P0 rules. Mapped to 'Cursor' per approved categories. (1 page)
  • Developers integrating Cursor with custom API proxies or custom LLM backends encounter this validation error when the proxy fails to properly forward the messages array. The Zod validation error is technical and unhelpful for IDE users. (1 page)

Related technologies

  • Cursor (18 pages)
  • Claude Code
  • OpenAI-compatible APIs
  • MCP servers

Troubleshooting clusters

  • Authentication errors
  • Model access and routing errors
  • Usage limit and billing errors
  • Editor integration errors
  • MCP and provider connection errors
  • Request validation errors

Latest pages in this category

Top fixes

High-intent troubleshooting topics

  • how to fix Cursor errors
  • Cursor error fix
  • Cursor troubleshooting
  • Cursor authentication failed
  • Cursor timeout
  • Cursor permission denied
  • Cursor deployment failed
Cursor Cursor

Cline (Cursor Alternative) HealthCheck Timed Out in JetBrains

Fix Cline plugin failing to load in JetBrains IDEs due to health check timeout; alternative Cursor-like IDE error for same category Includes evidence for Cursor troubleshooting demand.

Healthcheck timed out — Failed to load Cline in IntelliJ/JetBrains
Cursor Cursor

Cursor Model Not Available — IDE Cannot Access Selected AI Model

Cursor user cannot use the configured model — IDE reports model unavailable, blocking development flow. User needs to re-authenticate API key or switch model Includes evidence for Cursor troubleshooting demand.

Model not available / cannot access selected AI model in Cursor IDE
Cursor Cursor

Cursor API Invalid Request — messages Field Required

Fix Cursor IDE API invalid request error when messages field is undefined Includes evidence for Cursor troubleshooting demand.

Invalid request: [{"code":"invalid_type","expected":"array","received":"undefined","path":["messages"],"message":"Required"}]
Cursor Cursor

Firebase MCP server shows zero tools available in Cursor/Windsurf AI editors

Fix Firebase MCP server returning no tools available in Cursor and Windsurf AI code editors despite valid configuration and authentication Includes evidence for Cursor troubleshooting demand.

Firebase MCP server shows zero tools available in Cursor and Windsurf despite valid config and auth
Cursor Cursor

Cursor Server Install Failed — ENOENT on WSL code.sh Launcher

Fix Cursor IDE WSL remote server installation failing with ENOENT on code.sh launcher patch Includes evidence for Cursor troubleshooting demand.

Failed to patch code.sh launcher: Error: ENOENT: no such file or directory, open 'c:\Program Files\cursor\resources\app\bin\code'
OpenAI API Cursor

Cursor model not available

Fix Cursor model not available errors caused by unavailable models, provider settings, or access limits.

Model not available

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